Full implemantation

api/common/Exception/Mailbox/Stateless.php

@@ -0,0 +1,15 @@
+<?php
+namespace ProVM\Common\Exception\Mailbox;
+
+use Exception;
+use ProVM\Emails\Model\Mailbox;
+
+class Stateless extends Exception
+{
+    public function __construct(Mailbox $mailbox, ?Throwable $previous = null)
+    {
+        $message = "Mailbox {$mailbox->getName()} has not loaded any emails.";
+        $code = 102;
+        parent::__construct($message, $code, $previous);
+    }
+}